TY - JOUR
T1 - Magnetic biochar production alters the molecular characteristics and biological response of pyrolysis volatile-derived water-soluble organic matter
AU - Shang, Hua
AU - Wang, Qian
AU - Ok, Yong Sik
AU - Zhang, Shicheng
AU - Zhu, Xiangdong
N1 - Funding Information:
This research was financially supported by the Natural Science Foundation of China (No. 21876030 ). This work was carried out with the support of “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01475801 )”, Rural Development Administration , Republic of Korea.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/7/15
Y1 - 2021/7/15
N2 - The formed Fe oxides (minerals) in the magnetic biochar production process can facilitate its recovery and carbon retention rate. However, the influence of Fe oxides on pyrolysis volatile-derived water-soluble organic matter (PVWSOM, also called wood vinegar) has been largely overlooked. Results demonstrated that in-situ formed Fe oxides (α-Fe2O3 and Fe3O4) could obviously inhibit biomass cracking and accordingly reduce PVWSOM emissions, as indicated by decreased PVWSOM concentrations from 28.7 to 6.8 mg C/g biomass. FT-ICR MS results further indicated that Fe oxides suppressed the formation of large-molecular-weight PVWSOM compounds with high degree of unsaturation (DBE value > 5) and oxygen content (oxygen number > 5), leading to lower polarity and aromaticity. Therefore, the changes in PVWSOM molecular structures caused by Fe oxides relieved its toxicity on wheat seed growth, and reduced negative impact on soil microbial diversity and promoted soil bacterial Proteobacteria and Acidobacteria. These results indicate that molecular structures of PVWSOM from biomass pyrolysis also can be changed by Fe oxides to affect its application.
AB - The formed Fe oxides (minerals) in the magnetic biochar production process can facilitate its recovery and carbon retention rate. However, the influence of Fe oxides on pyrolysis volatile-derived water-soluble organic matter (PVWSOM, also called wood vinegar) has been largely overlooked. Results demonstrated that in-situ formed Fe oxides (α-Fe2O3 and Fe3O4) could obviously inhibit biomass cracking and accordingly reduce PVWSOM emissions, as indicated by decreased PVWSOM concentrations from 28.7 to 6.8 mg C/g biomass. FT-ICR MS results further indicated that Fe oxides suppressed the formation of large-molecular-weight PVWSOM compounds with high degree of unsaturation (DBE value > 5) and oxygen content (oxygen number > 5), leading to lower polarity and aromaticity. Therefore, the changes in PVWSOM molecular structures caused by Fe oxides relieved its toxicity on wheat seed growth, and reduced negative impact on soil microbial diversity and promoted soil bacterial Proteobacteria and Acidobacteria. These results indicate that molecular structures of PVWSOM from biomass pyrolysis also can be changed by Fe oxides to affect its application.
KW - Biological responses
KW - Magnetic biochar
KW - Molecular compositions
KW - Pyrolysis volatile
KW - Water-soluble organic matter
UR - http://www.scopus.com/inward/record.url?scp=85102320683&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2021.146142
DO - 10.1016/j.scitotenv.2021.146142
M3 - Article
C2 - 33714822
AN - SCOPUS:85102320683
SN - 0048-9697
VL - 778
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 146142
ER -